Spark-arrester.



G. GROSS.

SPARK ARRESTER.

APPLI OATION FILED SEPT. s, 1912.

Patented Aug. 19, 1913.

I/wmr Gudau G ass:

GUSTAV GROSS, OIE BRESLAU, GERMANY.

SPARK-ARRESTER.

Specification of Letters Patent.

Patented au aiaisie.

Application filed September 3, 1912. Serial No. 718,374.

T 0 all whom it may concern Be it known that I, GUSTAV Gross, doctor ofphilosophy, chemist, a subject of the German Emperor, and resident ofBreslau, Silesia, Germany, have invented new and useful Improvements inSpark-Arresters, of which the following is a specification.

My invention relates to improvements in spark arresters, and it consistsin the constructions and combinations herein described and claimed.

The object of my invention is to provide an improved spark arrester,especially adapted for use with locomotives, which will act effectivelyto separate all heavy matters, such as sparks and cinders from the fluegases.

In the accompanying drawings forming a part of this application in whichsimilar reference symbols indicate corresponding parts in the severalviews :--Figure 1 is a vertical axial section, illustrating oneembodiment of my invention; and Fig. 2 is a section on the line AA ofFig. 1.

Referring to the drawings, 7) indicates a vertical cylindrical flue forreceiving the gaseous products of combustion from a chamber, such as thesmoke box a of a locomotive; said flue bein provided with a flaringdischarge end 5 A cylindrical core 70 is supported by brackets 77axially within the flue b and terminates in a flaring upper head withinthe flaring discharge end of said flue; said core being provided with atapered lower end within the entrance end of the flue.

A hollow ring 2' is supported at the entrance end of the flue Z) andprovided with an annular series of nozzles about the adja cent taperedend of the central core a; said nozzles being inclined to the axis ofthe flue for directing jets of fluid spirally through the latter. Asuitable fluid, such as steam or compressed air, is applied underpressure to the hollow jet ring 2' by a pipe it. A pair of pipes c areshown discharging spirally within the flue b for directing additionalfluid jets with a whirling motion through the air.

An outer casing, comprising inclined walls (Z and (Z and the lowercylindrical.

wall, is supported about the flue b to provide an outer chamber forreceiving the heavy sparks and cinders separated from the flue gases;said casing being provided with a discharging cylindrical conduit 79which extends concentrically within the flaring discharge end of theflue 6 at a point above the central core is. A plate 6 is securedspirally on the walls of said outer chamber for directing the sparks andcinders deposited thereon into the lower cylindrical portion f of saidchamber; said plate being of less width than the outer chamber toprovide a space 6 about the flue, for permitting a whirling action ofthe gases.

A discharge spout g for the cinders leads from the lower end of thespiral plate 6, to provide convenient means for discharging the cindersat any desired point.

From the above description, it will be clear that my invention providesa simple and compact construction adapted to efficiently separate allsparks and heavy matters from the flue gases, without interfering withthe draft of the latter.

I have illustrated and described preferred and satisfactoryconstructions, but changes could be made within the spirit and scope ofmy invention.

I claim 1. In a spark arrester, the combination of a cylindrical fineprovided with a flaring discharge end, a central core extending axiallytherethrough, means for directing jets of fluid spirally through saidflue, a casing supported about said flue to provide an outer chamber,and a cylindrical discharge conduit extending from said casingconcentrically within the flaring end of said flue. 2. In a sparkarrester, the combination of a cylindrical flue provided with a flaringdischarge end, a central core extending axially through said flue andprovided with a flaring head within the flaring discharge end of thelatter, means for directing jets of fluid spirally through said flue, acasing supported about said flue to provide an outer chamber, and acylindrical discharge conduit extending from said casing concentricallywithin the flaring end of said flue and terminating above said centralcore.

3. In a spark arrester, the combination of a cylindrical flue providedwith a flaring discharge end, a central core extending axiallythercthrough, means for directing jets of fluid spirally through saidflue, a casing supported about said flue to provide an outer chamber, acylindrical discharge conduit extending from said casing concentricallywithin the flaring end of said flue,

and a spiral plate supported Within such outer chamber and extendingacross a portion only of the Width of the latter.

i. In a spark arrester, the combination of a cylindrical flue providedWith a flaring discharge end, a central core extending aXi ally throughsaid flue and provided With a tapered end Within the entrance end of thelatter, an annular series of inclined nozzles surrounding suchtaperedeore end,a casing supported about said flue to provide an outer chamber,and a cylindrical discharge conduit extendingfroin said casingconeentrically Within the flaring end of said fine.

In testimony that 1 claim the foregoing 1 my invention, 1 have signed myname in presence of two Witnesses, this twentythird day of August 1912.

GUSTAV GROSS.

W itnesses lVAL'rER SCHILL,

lVoLnnMAR HAUPT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

